Rattlesnakes Contract Their Tail Shaker Muscles at Frequencies Up to 90

Rattlesnakes contract their tail shaker muscles at frequencies up to 90 hertz (90 times a second) to create their rattling sound; they move their body muscles much more slowly (about 5 hertz) to slither around. Do you expect the tail shaker muscles to have a faster, slower, or the same type of myosin as the body muscles? Why?

A) faster, because contraction speed is correlated with rates of myosin binding and release from actin
B) the same, because there is no relationship between contraction speed and myosin properties
C) slower, because there is a negative relationship between contraction speed and rates of myosin binding and release from actin
D) slower, because there is a positive relationship between contraction speed and rates of myosin binding and release from actin
E) More information is needed, because there is no generalized relationship between contraction speed and force production.